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Public APIs — Free API Directory
A directory of free public APIs: filter by category, auth and CORS support, with direct links.
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Public APIs is a near-500K-star directory of free public APIs on GitHub (MIT licence, actively maintained): it organises no-cost public APIs into dozens of categories — Animals, Blockchain, Cryptocurrency, Finance, Weather, News and more — with each entry stating whether auth is needed (no key, OAuth or API key), whether HTTPS and CORS are supported, and a direct link to the official docs. Looking for a public data source, wiring weather, exchange-rate or market data into a small tool, or needing test endpoints for a demo? Browsing this list by category beats verifying search results one by one. Listing notes: the directory is a catalogue, not an aggregation gateway — availability and rate limits follow each API's own site — and the repo no longer ships a downloadable entries.json data file, so the README list is the source of truth.
Who it's for
Developers hunting public data sources for small tools, anyone needing test endpoints for a demo, and hobbyists curious about what free APIs exist.
18btc Crypto Tools Navigator · Our Take
“Listing notes: a near-500K-star catalogue whose Blockchain, Cryptocurrency and Finance categories are especially useful for this site's readers — each entry names the API and links out, with no-key vs keyed and CORS support marked, so check here before hunting for a data source elsewhere.”